Mold for building-blocks.



No. 810,976. PATENTED JAN. 30 1906.

W. PORTEN.

MOLD FOR BUILDING BLOCKS.

APPLICATION FILED JUNE 13,1904.

3 SHEETS-SHEET 1.

FIG,!,

Max:222;

t ms pmo as No. 810,976. PAIENTED JAN. 30, 1906.

W. PORTBN.

MOLD FOR BUILDING BLOCKS.

APPLIUATION FILED JUNE 13. 1904.

3 SHEETS-SHET 2.

mvem'o IT'HEALS E WILLIAM Powraql PATENTED JAN. so, 1906.

W. PORTEN.

N i anus a w M5 4 5/ IO w w W 4, u F F H M h $2 4 formed; and the object of my inven-,

block remove Fig. 6 is also a transverse are molded they can be removed and put in j WILLIAM-IORTEN, or sr. PAUL, MINNESOTA, MOLD FOR BUILDING-BLOCKS.

To all whom it mag eoncer n v Be it known that I, WILLIAM Pon'rn'm of St. Paul, Ramsey county,'Minnesota, have invented certain new and useful Improve, "5 ments in Molds for Building-Blocks, of which the following is a specification.

My invention relates to molds wherein artificial building-blocks can be easily and [0 't on is to provide a mold from which each block as it is molded can be conveniently re-i moved to a suitable place to'dry and the mold utilized for forming another block.

T 1 Other objects of the invention will appear 1'5 fromthe following detailed description;

' f The invention consists generally in various; constructions and combinations, all as here-j inafter described, and particularly pointed out,

infthe; claims. p Incthe accom anying drawings, forming, part of-this s ecification, Figure 1 is a planf view of a buil ing-block mol embodying my; invention. Fig. 2 is a side elevation of the.

same. Fig. 3 1s a longitudinal vertical sec-, 21; tion showing the position of the blocks in the mold ready to be removed. Fig. 4 is a trans verse; yertical section showing the block in the mold. Fi 5 is a similar view with the 3' vertical section'showing the side wall swung outwardly from the ends of the block and the cores bein discharged from the core-holes Fig. 'Zis a etail of the mechanism for locking the side and partition-walls together.

In the drawings, 2 represents suitable basetimbers connected by cross-bars 3 and pro-.,-

vided with upright posts or standards 4, on whichbars/If are supported. U on the bars A, I provide a series of removab e floors 11, royided withlon 'tudinally-arran ed core holes 6 substantia oval in form, t e one in the middle being 0 less width than those at themitside. Suitable cross-bars 12 are provided 'on;these removable floors to raise themvenience in elevating and removing the finished blocks, it bein my intention to provide a large number 0 these temporary or removable floors, so that as fast as the blocks asuitable place to dr and another floor. placed in the mold an the operation continued. Within the core-holes 6 correspond-l mgly-shaped cores 7 are arranged, tapered fromthe-bottom toward the top and ada ted v Specification'of Letters Patent. l 'Application filed June 13.1904. Serial No, 212,258.

PATENT our on.

Patented Jan. 30, 1906. I;

and discharged into the space beneath-the ffloor 11. Any suitable means may be pro-T vided for temporarily supporting these cores; 1during the operation of molding; but I prefer, f to provide a series of bars 5, one for each row 'of core-holes, supported at one end upon a plate 9, that connects the upright standards 4, and-at their other ends held in a horizontal position by means of standards 10, that are: 6 {hinged to the base-timbers 2 and adapted tov I-swing outwardly and allow the bars 5 to be removed when it is desired to discharge the 5 cores after the molding operation.

Thefioors 11 are separated from one an-, 1 other to form individual or independent frnolds by partition-walls 13,: that are hinged lat their lower-edges to the bars 4, with the exception of the middle partition-wall of the fseries, which is rigidly secured, as shown in. }Fig. 3, These partition-walls are hinged to -{facilitate the removal of the. blocks. A mold havingbeen filled, the workmen will unlock the side and partition walls and swing the for lmer outwardly to clear the blocks and then beginning at one end or both ends of the mold Will turn the partition-walls downto a horizontal position and remove the blocks. After the walls are swung down, as shown in Fl 3, each block canbe lifted out of its individ al mold without the-necessity of raising it over the top of the partition-wall, which wouldfbe necessary if the wall remained in an upright position; The side walls 14 are provided with depend ing straps 15, having outwardly-turned ends, that fit in recesses 16 in the ends of the bars 4 and are held therein when the wall is in an upright position by a plate 17. When the, 1 walls are swung outwardly to the position .shown in Fig." 6, they can be lifted vertically andthe hooked ends of the straps disengaged from the recesses. This construction I have shown in several prior casesfor similar inven tions, and I make no claim to the same herein. The side walls are also provided with slots 18 to receive bars 19, provided in the upper edges of the partition-walls 13. These bars are adapted to carry cam-levers 20, by means of which the side and partition walls are drawn snugly together and locked during the molding operation. I also rovi'de straps :21 on the lower edges of the si e walls to engage the ends of the movable floors 11 andho d them in lace while the mold is being filled. The si e walls are also provided With to binserted into"the.corefholes from a ovei,

dined cores 22, which causethe formation of recesses in the ends of the blocks, and said ries being fixed and the others'being coreshave shoulders 23 ,whereby ledges willbe at their lower edges to their respective tars;

formed in the bottom of the recesses for conremovable floors having a series of core-holes 5 venience in handling the blocks arranged upon .sa'd bars between the pairs of 5 As soon as the individual molds have been partition-walls, cores fitting within said holes, filled the temporary supports for the cores means for temporarily supporting said cores are removed and the cores discharged into in said holes, andside wa the space beneath the movable floors. The ends of said partition-walls, substantial side walls are then released and tilted to an described. inclined position, the outside wall is swung 6. In a mold for building-blocks, the comdown, and the block can then be lifted, with bination, with a frame provided with side the movable floor, off the platform and the and partition walls forming a series ,of molds, operation of molding repeated. each mold having an open bottom, remov- 65 I claim asmy invention able floors fitting within said molds and each 1. The combination, with a suitable frame, having a series of core-holes oval in form, exof removable floors having a series of coretending lengthwise thereof above the open holes arranged thereon, cores fitting within bottoms of said molds, cores tapered from the said holes, means for supporting said cores, bottom toward the top arranged to be insert- 70 side walls mounted on said platform, and pared into said holes from beneath, and means 2o tition or cross walls hinged at their lower for temporarily supporting said cores in said edges to said frame and adapted to be swung holes. down to a horizontal position, for conven- 7. A mold for building-blocks comprising ience in emptying the molds, and a rigid a frame having a series of cross-bars arranged 75 cross wall arranged intermediate to said at intervals with spaces between them, parti- 2 5 hinged crosswalls,substantiall as described. tion-walls arranged lengthwise upon said 2. In a mold for building-b ocks, a frame bars, removable floors resting upon said bars having a series of cross-bars in rows at interover the spaces between them and having a vals thereon, afixed partition-wall provided series of core-holes, cores adapted to be 1n-. 80

on the middle bar, and a series of partitionserted into said holes from beneath through walls hinged u on each side of said fixed wall. said spaces, means for temporarily support- 3. In a mol for building-blocks, the coming said cores in said holes, and side walls bination, with a frame provided with a series connecting the ends of said partition-walls, of cross-bars arranged with a space between substantially as described. 85 them thereon, side and partition walls, and 8. The combination, with a frame proremovable floors provided on said bars bevided with standards 4 on each side and tween said partition-walls and having a secross-bars 4 connecting said standards there ries of core-holes, and cores temporarily su being a space provided between said crossorted within said core-holes, substantially bars, side and partition walls supported upon 0 as described. said bars, the middle partition-wall being 4. In a mold for building-blocks, the comrigidly secured to its bar, and the partitionbination, with a frame, of side and partition walls intermediate to said middle one and the walls thereon, a removable floor having a seends of said mold being hinged on their bars, ries of core-holes and cross-bars resting upon removable floors arranged between said par- 95 said frame and forming a space between it tition-walls and having core-holes therein and said removable floor, and retainingand means for su porting cores in said holes,

straps rovided on said side walls opposite substantially as escribed. the en s of said movable floor. In witness whereof I have hereunto set my 5. A mold for building-blocks comprising hand this 2d day of May, 1904. a frame having a series of cross-bars arranged WILLIAM PORTEN.

s connecting the yas 6o at intervalswith spaces between them, a se- In presence of ries of partition-walls arranged lengthwise RICHARD PAUL. on said cross-bars, the middle wall of the se-' M. HAGERTY.

\ a i i 

